The relief consumers feel on Saturday may not persist through the year.
After seven months of emergency surcharges born from drought and depleted reservoirs, Brazil's electricity consumers enter a quieter chapter on April 16th — one where the green tariff, the system's most forgiving tier, replaces the heaviest burden on their bills. The crisis that forced the measure has not fully passed, but the water has returned enough to lift the emergency designation. What follows is not simple relief, however, but a negotiation between recovering nature and the accumulated pressures of inflation, regional rate adjustments, and regulatory decisions still unfolding.
- A surcharge that quietly inflated Brazilian electricity bills since September 2021 expires Saturday, ending an emergency measure tied directly to one of the country's worst recent droughts.
- The government promises a 20% reduction in residential bills, but independent consultancies warn that double-digit inflation and scheduled utility rate adjustments will erode much of that gain within months.
- Estimates of real consumer relief diverge sharply — from a modest 6.5% net reduction to a scenario where bills end the year 6% higher than they are today — reflecting genuine uncertainty about which tariff tier will govern the second half of 2022.
- Aneel has opened public consultation on raising yellow and red-tier surcharges by 56–57%, a proposal that would significantly reshape the savings picture if reservoir levels falter and the green tariff gives way.
- Reservoir recovery currently favors the green tariff holding through December, but that outcome remains hostage to rainfall patterns and regulatory decisions not yet made.
Starting April 16th, Brazilian electricity consumers will stop paying the water scarcity surcharge that has appeared on their bills since September 2021. That charge existed because a severe drought had drained the country's hydroelectric reservoirs, forcing the government to cover the gap between actual production costs and what consumers were paying. With water levels now recovering, the emergency measure expires — replaced by the green tariff, the cheapest tier in Brazil's tiered system, which carries no additional charge at all.
The government projects a 20 percent reduction in residential bills, but the relief is complicated by what comes next. Major distributors across the country are due for rate adjustments in the coming months, shaped by inflation running in double digits. Consultancy PSR estimates a net reduction of around 6.5 percent after a 15 percent rate adjustment is factored in. TR Soluções calculates a sharper immediate drop of 12.5 percent, but projects that by year's end, after adjustments take hold, bills could actually sit 6 percent above current levels. The difference between these forecasts hinges largely on whether the green tariff holds or gives way to the yellow tier in the second half of the year.
The timing of utility adjustments varies by region — Cemig in Minas Gerais faces a decision in May, Enel in São Paulo in July. Meanwhile, Aneel opened a public consultation on April 12th proposing to raise yellow and red-tier surcharges by 56 and 57 percent respectively, with a final decision expected after May 4th. Despite those proposed increases, the agency's board has signaled optimism: if reservoirs continue to recover at their current pace, consumers may avoid extra charges entirely through year's end. That outcome, however, depends on rainfall and decisions still to come — and consumers will be watching their bills closely to see whether Saturday's relief holds.
Starting Saturday, April 16th, Brazilian electricity consumers will stop paying an extra charge that has been tacked onto their bills since September 2021. That surcharge existed because of a drought—a severe one that had drained the country's hydroelectric reservoirs and forced the Ministry of Mines and Energy to add costs to every bill in an attempt to cover the gap between what power actually cost to produce and what people were paying. Now, with water levels recovering, that emergency measure expires. In its place comes the green tariff, the cheapest option in Brazil's tiered system, which adds nothing to the bill at all.
The water scarcity surcharge was the most expensive tier in the tariff structure, and its removal should feel like relief. The government is projecting that residential consumers will see their electricity bills drop by 20 percent. But the math gets complicated almost immediately. Several major power distributors across the country are scheduled for rate adjustments in the coming months—decisions that will be made by the National Electric Energy Agency, or Aneel, and shaped by inflation that is currently running in double digits. These adjustments will chip away at whatever savings the tariff change delivers.
Consultancy firms have run the numbers and arrived at different conclusions, depending on their assumptions about what tariff will actually be in effect at different times of year. PSR, one major consultancy, estimated in early April that a 15 percent rate adjustment is coming, and that the net effect on consumer bills will be a 6.5 percent reduction. TR Soluções did a different calculation: they found that the tariff change alone would cut bills by an average of 12.5 percent immediately, but by year's end, after the rate adjustments kick in, bills would actually be 6.09 percent higher than they are now. The gap between these projections reflects genuine uncertainty about how long the green tariff will hold. PSR expects it to last through December. TR Soluções thinks the yellow tariff—the middle tier—will return for several months in the second half of the year.
The timing of these adjustments varies by region and by utility. In São Paulo, Enel's rate decision is scheduled for July. In Minas Gerais, Cemig's adjustment is expected in May. On Tuesday, April 12th, Aneel opened a public consultation on new tariff values themselves. The agency is proposing to raise the yellow and red tier-one surcharges by 56 and 57 percent respectively—a significant jump. The red tier-two surcharge, the most expensive one, would actually decrease by 1.7 percent. The consultation runs until May 4th, after which Aneel will make its final decision.
Despite these proposed increases, Aneel's board has signaled that the underlying trend is favorable. The agency expects that if reservoir levels continue to recover—which current conditions suggest they will—consumers may avoid the extra charges altogether through the end of the year. That would mean the green tariff stays in place, and the surcharge system, at least for now, becomes irrelevant. But that outcome depends on rainfall and on decisions still to come, and consumers opening their bills in the months ahead will be watching closely to see whether the relief they feel on Saturday persists or dissolves.
Citas Notables
The tendency is that electricity bills will remain free of this extra charge through the end of the year, due to recovery of hydroelectric reservoirs.— Aneel board
La Conversación del Hearth Otra perspectiva de la historia
So the surcharge is just gone as of Saturday? What was it actually charging people?
It was an extra fee added to every bill—a percentage on top of the base rate. The Ministry created it when the drought hit and reservoirs dropped. It was meant to cover the cost of running backup power plants when hydroelectric output fell short.
And now it's replaced by the green tariff, which costs nothing extra?
Correct. The green tariff is the bottom tier—it means no surcharge at all. But that's where the story gets murky. The government says bills will drop 20 percent, but the power companies are about to raise their base rates.
So the savings disappear?
Not entirely, but they shrink. One firm says you'll save 6.5 percent by year's end. Another says you'll save 12.5 percent immediately, then lose it all and end up paying 6 percent more. It depends on whether the green tariff actually stays in place.
Why wouldn't it?
Because if the drought returns or reservoirs don't recover as expected, they'll switch to the yellow or red tariffs, which have their own surcharges. The green tariff is only cheap if conditions hold.
When do we know if they'll hold?
The agency thinks they will through the end of the year, but they're also proposing to raise the yellow and red surcharges by 56 and 57 percent. That's their insurance policy—if they need to activate those tiers, they'll be more expensive than before.